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95% Min Floating Refractory Cenospheres Fly Ash Microspheres. High Floating Rate: Minimum 95% floating rate ensures excellent buoyancy performance in various media. Excellent Thermal Insulation: Low heat-conducting system (0.054-0.095 W/M K) ideal for insulation materials. High Crush Strength: Robust durability with crush strength ranging from 500 to 15000 psi. Wide Industrial Application: Suitable for ceramics, glass, oil drilling, plastics, paints, and refractory industries. Chemical Stability: pH level of 6 with high resistance to corrosion, climate, and wave erosion.